Power Management System with Redundant Capacitor Monitoring
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Solution Overview
Problem
Input capacitors in power management systems are prone to failures such as shorting or opening, leading to inefficient or insufficient power delivery, which existing technologies have not adequately addressed.
Innovation Solution
A system and method that utilize redundant input capacitors with a controller to monitor and manage current flows, generating alerts and adjusting switches to prevent power delivery issues by opening switches when capacitors short or open, ensuring continued stable power output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single input capacitor is used in the power management system, then the device complexity is low, but the reliability of power delivery deteriorates due to capacitor failures
Solution Approach 1:
The single input capacitor is segmented into multiple parallel capacitors (first capacitor and second capacitor). Each capacitor can be independently monitored and controlled through separate switches, allowing the system to maintain power delivery reliability even when one capacitor fails while managing complexity through modular segmentation.
Solution Approach 2:
The system implements beforehand cushioning by providing redundant capacitors and monitoring mechanisms in advance. The controller continuously monitors capacitor health and can switch to backup capacitors or alert the user before complete power delivery failure occurs, cushioning against the harmful effects of capacitor failures.
2Reliability
If redundant input capacitors are implemented, then the reliability of power delivery improves, but the device complexity increases due to additional components and monitoring
Solution Approach 1:
Multiple capacitors are merged in parallel configuration to provide redundant power delivery capability. The controller merges the monitoring functions for all capacitors into a single integrated control unit that can manage multiple capacitors through unified alert generation and switch control, reducing the perceived complexity despite increased redundancy.
Solution Approach 2:
The system implements feedback mechanisms where the controller continuously monitors the health status of each capacitor and provides real-time feedback through alerts when failures are detected. This feedback loop enables automatic or user-informed switching to healthy capacitors, maintaining reliability while managing complexity through intelligent control.
3Object-affected harmful factors
If capacitor failure monitoring is implemented, then the harmful effects of capacitor failures are reduced, but the device complexity increases due to monitoring components
Solution Approach 1:
The monitoring system enables the power management system to self-diagnose capacitor failures through automated monitoring by the controller. The system serves itself by detecting failures, generating alerts, and managing switch operations without external intervention, reducing harmful effects while keeping the monitoring complexity manageable through self-service automation.
Data Source
AI summary
A power switch may be coupled to a power input, a first capacitor, a second capacitor, and a power output. A first switch may be coupled to the first capacitor. A second switch may be coupled to the second capacitor. A current sensor may be configured to measure a first current of the first capacitor and a second current of the second capacitor. A controller may be configured to determine whether the first capacitor and the second capacitor shorts or opens based on the first current and the second current, respectively. The controller may generate one or more alerts based on opening/shorting of a capacitor, and may open a switch based on shorting of a capacitor.